Super Lock SLKJP1002 Polished Brass (US3) Solid Heavy Duty Single Cylinder Jimmy Proof Deadlock Deadbolt Lock Set With Flat Strike And A Maxtech Cylinder, specially designed with an extra security shuttle guard. This lock provides superior locking strength, protecting against "jimmying" or prying the door from the frame to gain entry. The box includes a polished brass single cylinder jimmy proof, a polished brass rim cylinder, 2 keys, mounting screws, a large back jimmy mounting plate, and instructions.